1 /* 2 * Copyright (c) 1985, 1987, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 static const char copyright[] = 36 "@(#) Copyright (c) 1985, 1987, 1993\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38 #endif /* not lint */ 39 40 #ifndef lint 41 #if 0 42 static char sccsid[] = "@(#)tcopy.c 8.2 (Berkeley) 4/17/94"; 43 #endif 44 static const char rcsid[] = 45 "$FreeBSD$"; 46 #endif /* not lint */ 47 48 #include <sys/types.h> 49 #include <sys/stat.h> 50 #include <sys/ioctl.h> 51 #include <sys/mtio.h> 52 53 #include <err.h> 54 #include <errno.h> 55 #include <fcntl.h> 56 #include <paths.h> 57 #include <signal.h> 58 #include <stdio.h> 59 #include <stdlib.h> 60 #include <string.h> 61 #include <unistd.h> 62 63 #define MAXREC (64 * 1024) 64 #define NOCOUNT (-2) 65 66 int filen, guesslen, maxblk = MAXREC; 67 u_int64_t lastrec, record, size, tsize; 68 FILE *msg = stdout; 69 70 void *getspace __P((int)); 71 void intr __P((int)); 72 static void usage __P((void)); 73 void verify __P((int, int, char *)); 74 void writeop __P((int, int)); 75 void rewind_tape(int); 76 77 int 78 main(argc, argv) 79 int argc; 80 char *argv[]; 81 { 82 register int lastnread, nread, nw, inp, outp; 83 enum {READ, VERIFY, COPY, COPYVERIFY} op = READ; 84 sig_t oldsig; 85 int ch, needeof; 86 char *buff, *inf; 87 88 guesslen = 1; 89 while ((ch = getopt(argc, argv, "cs:vx")) != -1) 90 switch((char)ch) { 91 case 'c': 92 op = COPYVERIFY; 93 break; 94 case 's': 95 maxblk = atoi(optarg); 96 if (maxblk <= 0) { 97 warnx("illegal block size"); 98 usage(); 99 } 100 guesslen = 0; 101 break; 102 case 'v': 103 op = VERIFY; 104 break; 105 case 'x': 106 msg = stderr; 107 break; 108 case '?': 109 default: 110 usage(); 111 } 112 argc -= optind; 113 argv += optind; 114 115 switch(argc) { 116 case 0: 117 if (op != READ) 118 usage(); 119 inf = _PATH_DEFTAPE; 120 break; 121 case 1: 122 if (op != READ) 123 usage(); 124 inf = argv[0]; 125 break; 126 case 2: 127 if (op == READ) 128 op = COPY; 129 inf = argv[0]; 130 if ((outp = open(argv[1], op == VERIFY ? O_RDONLY : 131 op == COPY ? O_WRONLY : O_RDWR, DEFFILEMODE)) < 0) 132 err(3, "%s", argv[1]); 133 break; 134 default: 135 usage(); 136 } 137 138 if ((inp = open(inf, O_RDONLY, 0)) < 0) 139 err(1, "%s", inf); 140 141 buff = getspace(maxblk); 142 143 if (op == VERIFY) { 144 verify(inp, outp, buff); 145 exit(0); 146 } 147 148 if ((oldsig = signal(SIGINT, SIG_IGN)) != SIG_IGN) 149 (void) signal(SIGINT, intr); 150 151 needeof = 0; 152 for (lastnread = NOCOUNT;;) { 153 if ((nread = read(inp, buff, maxblk)) == -1) { 154 while (errno == EINVAL && (maxblk -= 1024)) { 155 nread = read(inp, buff, maxblk); 156 if (nread >= 0) 157 goto r1; 158 } 159 err(1, "read error, file %d, record %qu", filen, record); 160 } else if (nread != lastnread) { 161 if (lastnread != 0 && lastnread != NOCOUNT) { 162 if (lastrec == 0 && nread == 0) 163 fprintf(msg, "%qu records\n", record); 164 else if (record - lastrec > 1) 165 fprintf(msg, "records %qu to %qu\n", 166 lastrec, record); 167 else 168 fprintf(msg, "record %qu\n", lastrec); 169 } 170 if (nread != 0) 171 fprintf(msg, "file %d: block size %d: ", 172 filen, nread); 173 (void) fflush(stdout); 174 lastrec = record; 175 } 176 r1: guesslen = 0; 177 if (nread > 0) { 178 if (op == COPY || op == COPYVERIFY) { 179 if (needeof) { 180 writeop(outp, MTWEOF); 181 needeof = 0; 182 } 183 nw = write(outp, buff, nread); 184 if (nw != nread) { 185 if (nw == -1) { 186 warn("write error, file %d, record %qu", filen, record); 187 } else { 188 warnx("write error, file %d, record %qu", filen, record); 189 warnx("write (%d) != read (%d)", nw, nread); 190 } 191 errx(5, "copy aborted"); 192 } 193 } 194 size += nread; 195 record++; 196 } else { 197 if (lastnread <= 0 && lastnread != NOCOUNT) { 198 fprintf(msg, "eot\n"); 199 break; 200 } 201 fprintf(msg, 202 "file %d: eof after %qu records: %qu bytes\n", 203 filen, record, size); 204 needeof = 1; 205 filen++; 206 tsize += size; 207 size = record = lastrec = 0; 208 lastnread = 0; 209 } 210 lastnread = nread; 211 } 212 fprintf(msg, "total length: %qu bytes\n", tsize); 213 (void)signal(SIGINT, oldsig); 214 if (op == COPY || op == COPYVERIFY) { 215 writeop(outp, MTWEOF); 216 writeop(outp, MTWEOF); 217 if (op == COPYVERIFY) { 218 rewind_tape(outp); 219 rewind_tape(inp); 220 verify(inp, outp, buff); 221 } 222 } 223 exit(0); 224 } 225 226 void 227 verify(inp, outp, outb) 228 register int inp, outp; 229 register char *outb; 230 { 231 register int eot, inmaxblk, inn, outmaxblk, outn; 232 register char *inb; 233 234 inb = getspace(maxblk); 235 inmaxblk = outmaxblk = maxblk; 236 for (eot = 0;; guesslen = 0) { 237 if ((inn = read(inp, inb, inmaxblk)) == -1) { 238 if (guesslen) 239 while (errno == EINVAL && (inmaxblk -= 1024)) { 240 inn = read(inp, inb, inmaxblk); 241 if (inn >= 0) 242 goto r1; 243 } 244 warn("read error"); 245 break; 246 } 247 r1: if ((outn = read(outp, outb, outmaxblk)) == -1) { 248 if (guesslen) 249 while (errno == EINVAL && (outmaxblk -= 1024)) { 250 outn = read(outp, outb, outmaxblk); 251 if (outn >= 0) 252 goto r2; 253 } 254 warn("read error"); 255 break; 256 } 257 r2: if (inn != outn) { 258 fprintf(msg, 259 "%s: tapes have different block sizes; %d != %d.\n", 260 "tcopy", inn, outn); 261 break; 262 } 263 if (!inn) { 264 if (eot++) { 265 fprintf(msg, "tcopy: tapes are identical.\n"); 266 return; 267 } 268 } else { 269 if (bcmp(inb, outb, inn)) { 270 fprintf(msg, 271 "tcopy: tapes have different data.\n"); 272 break; 273 } 274 eot = 0; 275 } 276 } 277 exit(1); 278 } 279 280 void 281 intr(signo) 282 int signo; 283 { 284 if (record) { 285 if (record - lastrec > 1) 286 fprintf(msg, "records %qu to %qu\n", lastrec, record); 287 else 288 fprintf(msg, "record %qu\n", lastrec); 289 } 290 fprintf(msg, "interrupt at file %d: record %qu\n", filen, record); 291 fprintf(msg, "total length: %ld bytes\n", tsize + size); 292 exit(1); 293 } 294 295 void * 296 getspace(blk) 297 int blk; 298 { 299 void *bp; 300 301 if ((bp = malloc((size_t)blk)) == NULL) 302 errx(11, "no memory"); 303 return (bp); 304 } 305 306 void 307 writeop(fd, type) 308 int fd, type; 309 { 310 struct mtop op; 311 312 op.mt_op = type; 313 op.mt_count = (daddr_t)1; 314 if (ioctl(fd, MTIOCTOP, (char *)&op) < 0) 315 err(6, "tape op"); 316 } 317 318 static void 319 usage() 320 { 321 fprintf(stderr, "usage: tcopy [-cvx] [-s maxblk] [src [dest]]\n"); 322 exit(1); 323 } 324 325 void 326 rewind_tape(int fd) 327 { 328 struct stat sp; 329 330 if(fstat(fd, &sp)) 331 errx(12, "fstat in rewind"); 332 333 /* 334 * don't want to do tape ioctl on regular files: 335 */ 336 if( S_ISREG(sp.st_mode) ) { 337 if( lseek(fd, 0, SEEK_SET) == -1 ) 338 errx(13, "lseek"); 339 } else 340 /* assume its a tape */ 341 writeop(fd, MTREW); 342 } 343